2 papers
quant-ph2024
Perturbative approach to time-dependent quantum systems and applications to one-crossing multistate Landau-Zener models
Rongyu Hu, Chen Sun
We formulate a perturbative approach for studying a class of multi-level time-dependent quantum systems with constant off-diagonal couplings and diabatic energies being odd functio…
quant-ph2024
Solution to a class of multistate Landau-Zener model beyond integrability conditions
Rongyu Hu, Fuxiang Li, Chen Sun
We study a class of multistate Landau-Zener model which cannot be solved by integrability conditions or other standard techniques. By analyzing analytical constraints on its scatte…